Paper-trimming machine



(No Model.) 2 SheetsSheet 2.

J. H. STONEMET'Z.

PAPER TRIMMING MAGHINE.

No. 301,178. Patented my 1, 1884.

flttorneys,

JOHN H. STONEMETZ OF ERIE, PENNSYLVANIA.

PAPER-TRIMMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 301,178, dated July 1,1884:.

Application filed July12, 1883. (N0 model.)

To (1. whom it may concern:

Be it known that I, J GEN H. STONEMETZ, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented certain new and useful Improvements in Paper Cutting orTrimming Devices for Paper-Folding Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters or figures of reference marked thereon, which form a partof this specification.

This invention relates to devices for cutting or trimming the foldededges of sheets of paper as they pass through the rollers of apaper-folding machine.

The object of my invention is to provide an improved trimming mechanismwhich can be adjusted so as to admit of the folding and trimming ofavariety of sizes of paper in the same machine,and which is alsoprovided with a number of cutting surfaces or edges, each of which canbe successively brought into service as they become worn.

To these ends the invention consists in the construction and combinationof devices which will be hereinafter more fully described, and then setforth in the claims.

In the drawings, Figure 1 is a vertical transverse section of apaper-folding machine, exhibiting the second pair of rollers, the frontone of which carries myimproved paper-trimming device. Fig. 2 is asectionof the adjustable annular sleeve on a portion of the rollershaft,which is also shown in section. Fig. 3 is a section ,of the annularknife, showing the spline-and-groove connection between it and the shafton which it is mounted, the pressurespring being removed. Fig. 4 is atop view of the star or triangular spring for pressing together thecutting-edges of the annular sleeve and knife. Fig. 5 is a top view ofthe lower end of the second pair of rolls, showing the adjustable sleeveand annular knife beneath; and Fig. dis a vertical transverse sectiontaken on the line a: x of Fig. 1.

The letterA designates part of the frame of a paper-folding machine; AA, the first pair offolding rollers; A the knife coacting with saidrollers, and B b denote the second pair of folding-rollers,which arearranged and driven in the ordinary manner. In the present in- 5 5stance the front one of this second pair of folding-rollers is reducedin diameter at one of its ends, as is shown in Fig. 1, and has alongitudinal groove, a, in said reduced portion. An annular sleeve, D,is fitted on this reduced portion of the roller B, and has a set'screw,b, which enters the groove a, as is clearly shown in Fig. 2. Thisset-screw is countersunk 1n the periphery of the sleeve D, and is flushtherewith, so as to present no projection to the paper passing over thesleeve. The sleeve D has a series of eireul'nferential or annulargrooves, D, the inner vertical faces of which grooves are beveled, as isshown in Fig. 2, for preventing the paper cuttings or shavings frombeing wedged in said grooves, and thus clog the cutter operatingtherein.

On a short independent shaft, I, having its bearingsbeneath thefolding-roller bearing the grooved sleeve, and geared therewith bywheels f, is fitted a circular knife. 0, which is held between the diskor hub G and a clampingplate, 0 secured to said hub by screw-bolts orother means. A spline, F, in the bore of said hub O enters a groove, G,in the shaft I, and serves to effect the connection between these parts,it being understood that the hub and its attached cutter can be adjustedlongi tudinally on the shaft I, but cannot turn thereon. The shaft I hasa collar,L, fastened by a 5 set-screw just within its outsidebearing,which holds it against longitudinal displacement. The knife 0has an annular groove, 0, in its face, and is held automatically againstone of the vertical faces of the annular grooves in the 9 sleeve D bymeans of astar-shaped or triangular spring, J, which has an eye for thereception of the shaft I, and bears against the face of theolampingplate O", as is shown in Fig 1. The spring is interposed betweenthe plate 0 and bearing-collar K, the latter being adjustable on theshaft I, so as to permit the bearing-collar and spring to be adjustedalong said shaft, to allow the cutter to operate in either of thegrooves of the annular sleeve D. When it is desired to shift thecutting-disk from one groove to another, the collars K and L are bothloosened, and the shaft I,with its gear, drawn out through its outerbearing into the position shown by dotted lines in Fig. 1 until theinner end of the shaft is clear of the cutter. The cutter is then looseand detached, and can be removed from contact with the grooved sleeve.

The edge of the cutting-disk in then inserted into another groove, D, ofthe sleeve, and the central opening of the cutter dis]; being broughtinto line with the end of the shaft I, the latter is pushed in throughthe cutter into place and locked by fastening the collar L.'

It will be manifest from the description and the drawings that theannular sleeve D is fitted on a'reduced portion of one of thefolding-rollers, is made flat or straight, and does not project beyondthe periphery of the largest part of said roller, and in this manner theannular sleeve virtually becomes a continuation of the roller, andserves to prevent the sagging or bending of the paper passing over thesame. When the largest sized paper is to be cut, the adjustable sleeveis held at the extreme or outer end of the folding-roller, and thecutting-knife is entered into the last groove, so as to run therein. Forsmaller sheets of paper, or when larger strips are to be cut from theedges of the paper, the adj ustable sleeve and cutter, or

either, or both, are adjusted on their respect-' ive shafts, in order tochange their positions in relation to the paper passing through thefolding-rollers B. i

'I am aware that a spring-pressed knife or cutter fitted on anindependent shaft has heretofore been employed in connection with acircumferentiallygrooved folding-roller for trimming sheets of paperpassing between it and an. adjoining roller; and hence I make no claimto such cutter, broadly considered.

What I claim, however, as new, and desire to secure by Letters Patent,is-

1. 'In a paper-folding machine, the combination of a folding-rollercarrying an adjustable annular sleeve provided with circumferentialgrooves, with an adjustable circularcutter c0- ac'ting with saidadjustable sleeve, whereby both the line of trimming and thecutting-edge can be changed, substantially as herein set forth. 7

2. In a paper-folding machine, the combination of a folding-rollerhaving a reduced end portion, the annular sleeve having circumfen entialgrooves adj ustably fitted on said reduced portion of the roller, andthe same in its external diameter as the diameter of said roller, with acircular cutter coacting with said adjustable sleeve, substantially asherein set forth.

In testimony-whereof I afiiX my signature in presence of two witnesses.

JOHN II. STONEMETZ.

. Witnesses:

F. W. GRANT, D. O. WELLER.

